there are gears give perception bonus, and a talent helping trap and hidden treasure detecting.
in my experience, 12 would be enough for most part of the game.
however, I don't think it's a waste attributes though, perception will increase critical chance. personally when gears get me high enough strength and dex, I like my melee and range characters to have high perception.
also, it contributes to starting AP. as non glass cannon player, it matters somewhat~